Clutch for winding-drums of hoisting machinery.



P. TURNER. CLUTCH EUR WINDING DRUMS OF HOISTNG MACHINERY. APPLIGATmN :FILED mm1, 190e.

928,482. K Patented m20, 1909.

2 SHEETS-SHEET 1.

@mm1/ym@ @iwi-Emmaus QL/Mw@ G? C. P. TURNER. GLUTOH FOR WINDING DRUMS OF HOISTING MACHINERY.

APPLIGATION FILD FBBJ, 1908.

Patented July 20, 1909.- 2 SHEETS-SHEET 2.

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@mib/Lemay Toulbwhomfitimay concern: f i Bent 4known that I, `CHARLES P. TURNER, a citizenf of the United States, residing at Harrisburg, county of Dauphin, State of ,Pe'nnsyl'vania,` United States of America,

have 'invented certain new and `useful Improvements infGlutches for Winding-Drums l of Hoisting'Machinery; and I do hereby declare the following to be afull, clear, and exact description of the invention, such Vas `will enable `others skilled in the art. to which iti appertainsto make and use the same, referencefbeing had to the accompanying drawt i ings, and to `:figures of reference marked thereon, which lform a part ofl this specification. f invention relates `to clutches and more l especially to clutches for the windingldrrums of hoistingmachinery. Referring to the drawings in` which like partsy are similarly designated Figure 1 is a planvieiv of a traveling crane having two v-l, shown'the clutch as applied to the` drums.ofadoiible drum, electrically driven hoisting drums thereon. Fig. 2 is a section through one of the drums showing the clutch mechanism in detail. i

The object of the invention is the con struction of a small and easily operated clutchfoin-controlling the motion of a winding druni of ahoisting machine of any description, the construction being such that the -lcad-ongthe drum may be conveniently low-ered"withoutstopping or reversing the niotionof the i shaft.

trolley cfa-traveling crane, for handling a two rope grab-bucket. ,-i-Mountedvon t-h carriagewpropelling `n'iotor` Ll provided with agpinion 5, that .i drives' a gear wheel 6, mounted Aon ashortshaft 7, carrying a 'pinf ion 8ithat drives a gear wheel 9, fixed on a wheel axle of the trolley carriage. i

. The hoisting motor has mounted on its motordshaft Jath-pinion 11 which in turn drives afgearmwheel 12, on a `shaft V13, mounted inthe trolley frame, said shaft carries a driving pinion 14:' meshing withthe gear wheel 15 which in turn meshes 4with the gear wheel 16. The gear wheels 15 and 16 are preferably, but notnecessarily, of the same size. These gear wheels 15 and 16 are mounted on shafts 17 andlS respectively,Y

said shafts carrying the hoisting drums 19 and 20, both of. said drums loose on .their shafts, and the drum 20 is provided with a "oitr wiunlnimumson ifoIs'rING f p l IMil,ig,Specificationvof/Lettersatent.l l ,l `llaatent'ed v29,1909.` .i ,ja ,if Application .filed February 1,' 1908. Serial No. 413,843.` y l i trolley carriage '2 is .a

" ESQQTURNER, oriiaiiiiis'nuno;TrENNsYLvA'NiA 1 1,. :i t

I band brake 21, operated by a shaft 22,'pmLr lel with the drum and provided-- withacrank 23 that is capable of beingactuated by the operator `from his cage (not shown).`

Each drum is provided at one end with a clutch-casing A29 that is'seci'ire/d to a bushing 430 which in turn is connected by a spline or key 31 to the shaft, see Fig. 2 illustrating oneof the drumsnamely the drum'19 inA section. The bushing is however, free to" move a slight distance longitudinally ofthe shaft, this being permitted by the spline. l

Between thebushng 30 and the clutchcasing 29 is a ring 32 rotatable in rela-tion to both 'the clutch-casing 29 and bushingBO,

a set of balls 33 being rin sai ball bea-ring acting as a thrust `bearing laced between the between 30 and 32. Within the drum are pockets 34 for receiving coil springs 35 and and bushing, forming a ball bearing",vv

passing through these springs, the pockets:

and the head of the drum are bolts 36, wlios heads 37 engage the ring threaded ends of the boltsarenuts 3S forin ing abutments for one end of the springs,\ said nuts heldagainst rotation by check nuts drinn i 39. 4These springs tend to draw the and clutch-casing 29 together.

4 Surrounding the ring 32 is a polygonal flange 40 formed on one end ofthe drum and projecting into the clutch-casing 29. Looselyf mounted on suitable pins 41 in the clutch'- 32 and at ther casing 29 are'a series of annulardisks 12 which valternate with similarl disks 13, mounted on the polygonal yflange 40. -lnstead of a polygonal flange 10 any other i suitable means may be used for non-rota tably connecting the disks. 4B to the drum so as to permitslight axial movement. Under normal conditions the tension of the springs $35 is sufficient to pull the clutchcasing29' v with sufficient force towards the end ofthe drum to produce friction' between .the plates.

required for holding the drum against rota-` tion on its shaft.

44 andfl are suitable bushings for the` drinn.` c i f 46 is a flange on shaft 17 whichprevents the movement of the drum toward the clutchcasing and forms an abutment against which ultimately the pull of the springs is exert-edk in pulling the clutch-casing toward 'the drum.

Mounted on the frame of the trolley aclutch releasing device comprising a station-V ary casing 47 having a number of cylindrical i'a'hich` recesses is secured an iron heldin th winding 50, which for convenience is'wonndv V on a thin'spool 51 capable of being over the core 48' with arranged around its center, in each core 48 place bya bo1t49 passed through casing 47. On'each core 48 is placed a bearing when current is passedt-hrough the coils, 50 and projects slightly beyond the 'Y faces kof the cores48 and the face ofthe casing 47 so as to prevent the clutch-casing 29 ym 'coming into actual contact with' the electioifmagnet's, thereby -preventing the stickingofthe Vclutch-casing due to remaL -n ent magnetism. The hoisting ropes are secured at their'ends to the drums 19 and 20 :respectively there being two' ropes asis customary for handlin v-a .two rope bucket, the

Structure of which. atter I p forms-no part of thepresent invention.

` "-IThe .operation .as will befobserved from Fig. 2 is 4such that the clutch-casing 29 is drum free to. rotate thereon; of a clutch-casdrzwn toward the driven member or drum 19 A' is lconnected to the driving member yor shaft y the spline so' that the drurmthe clutch-v 'casing and .the shaftwill rotate as a unit. By sending 'current through the solenoicls or *coils the clutch-casing- 29'whic'h forms an armature for the electro-magnets, of the cores 48 and the coils 50 is .40

composed attracted,

axiallymoving the clutch-casing 2 9 toward v t-he magnets against the tension of the springs 35 that exert a pull on the clutch'- casing 1n a direction-so posite to the mag-- netic pull, Athereby re easing the friction 45- clutch-mechanism to automaticallyconnect the drumA and shaftv andv electro-magnetic mechanism surrounding the 'shaft y to move and hold-the mechanical clutch-'mechanisml ,against itsautomatic'operation to permit the drum to rotate freely shaft. i

l 2. 'Ifhe combination-with a drivlng member and a driven member loose thereon, of a mechanicall clutch-mechanism constantly urged into clutching position .to'connect the slipped;

This collar prevents ysprings thereby causing the friction plates' to -produce suiiicient friction to lock'. the drum to the clutch-casing which in turnwith a shaft'I and a with; respectv to the f lectro 'magnetic' meanssurrounding th 1s of the iirivinv member and brought into peration lat will to move and hold the clutch-mechanism out of o eration to permit the members to rotate mdependent-ly of one anothe 3. Thecombination-with a shaft and two members drum free to rotate thereon; `of mechanicalv clutchmechanism; springs to automatically urge said mechanism into clutching position and electro-magnets surroundingthe shaft brought into operation at will to move and. hold the clutch-mechanism against the ae?,

tion of their springs to permit the drum and shaft to rotate independently of one another.

4. Ihe combination with a, vshaft and a drum free to rotate thereon; of aclutch-casing lslida'blybut non-rotatably mounted on the sha-ft, friction plates secured to the casing and-friction platesV secured to the drum coperatingwith those secured to the casing, springs to urge the casing and its plates toward the drum.- to frictionally .engage th'e plates and lock the drum to the casing and electro-magnets mounted in proximity to the casing to withdraw it from t e drum against the tension of the springs.

5. The combinatlon -with a shaft and a ing having an annular recess in -one of its faces, annular friction plates mounted in said recess, a polygonal ange on lthe drum projecting into" the casing through the centers of the plateson the with those in the casing, a vring 1n the casing free to rotate, spring urged means'- to'connect the ring and drum vto urgethe casing toward the drum and the plates in frictional engagement, a magnet casing.` and electrolmagnet-s fixed therein to retract the clutch caslng.

. 6.l Thei combinationwith a plurality of shafts, a gear wheel secured to each shaft, the gear wheel on one shaft gearing with the 'gear wheelon the adjacent'shaft, a motor and a speed reducing gear train betweenthe motor and one of the aforesaid gear wheels; of a vwindinr drum, loose on each shaft, mechanical clutch mechanism between each drum and itsshaft, vsprings mounted in each drum about its axis to urge the clutch mechanism into-clutching action and an electromagnetic'meanssurrounding each shaft to release each clutch at will. l

In testimony that I claim the foregoing as my invention, I have signed my name in presence of two subscribing witnesses.

CHARLES P.1' rU1n\I ER. Witnesses: 4

' GEO. W. PARSONS, ELMon-n DE Wrr'r.

flange coperating 

